Albert teollee



' (No Model.)

A. TROLLER.

STEM SETTING MECHANISM FOR WATCHES.

No. 347,450. Patented Aug. 17, 1886.

UNITED STATES PATENT OFFICE.

ALBERT TROLLER, OF ROCKFORD, ILLINOIS, ASSIGNOR TO THE ROCKFORD \VATOH COMPANY, OF SAME PLACE.

STEM-SETTING MECHANISM FOR wATcHE SPECIFICATION forming part of Letters Patent No. 347,450, dated August 17, 1886.

Application filed May 17, 1880. Serial No.202,3(1t5. (No modell To aZZ whom it may concern:

Be it known that I, ALBERT TnoLLER, residing at Rockford, in the county of Winnebago and State of Illinois, and a citizen of the United States, have invented a new and useful Improvement in XVatches, of which the following is a full description, reference being bad to the accompanying drawings,in whieh- Figure 1. is a plan or front view, a portion of the dial being removed. Fig. 2 is also a plan or front view, a portion of the dial being cut away, some of the parts being shown in a different position from that shown in Fig. 1. Fig. 3 is a detail showing the wheel D engaged with the pinion c. Fig. 1- is an enlarged detail, being a section at line a m of Fig. 1.

As watches have heretofore been constructed the setting of the hands does not affect the secondhand, and hence when changes of the hands are made the second-hand does not correspond with the minute-hand, except when the minute-hand is set to some given minute.

The objects of my improvement are to provide devices by the use of which, when the hands are set, either in a stenrwinding or a key-winding watch, the second-hand will be set to correspond with the minute-hand whether the minute-hand be set to any given minute or any fraction thereof; also, to adapt my said improvement to be used either in an opeirfaecd case with the pendant in line with figure 12 orin a hunting-case with the pendant in line with the figure 3, which I accomplish as illustrated in the drawings and hereinafter described.

In the drawings, A represents the bottom plate, a portion of which is exposed by the cutting away ofa part of the dial J.

B is an arm pivoted upon the shouldcrscrew or pivot a. As shown, this arm B is made in two parts, and the smaller part, (I, is secured to the main portion by means of a screw. The free end of this arm is open or slotted to receive a pinion on the staff which carries the second-hand and pcrmi ts the engagement of the wheel D therewith.

o is a staff which carries the second-hand d. This staff is pivoted in the free end of the arm B, and upon it is a pinion, c, which is located in the recess or opening in the end ofthe arm B.

O is the minutepinion.

D is a centcnwheel provided with fine teeth on its periphery and secured to the minutepinion C, which pinion is held on the centerstaff or arbor by friction, as usual. tor-wheel D engages with the pinion e on the staff which carries the second-hand. fis a spring arranged to bear against the arm B and hold it in engagement with the wheel D. It is important that the arm 13 be pivoted and that the springf be used to hold the pinion c in engagement with the wheel D, because the teeth of this wheel are very fine, and if the arm were rigid and the spring not used there mightbe in some cases some inequality which would interfere with the operation.

E is the pinion ordinarily used upon the staff which carries the secondhand; but this pinion Eis carried by a short staff, 5 which has no connection with the staff which in my watch carries the second-hand. This staff which carries the secondhand has a pinion. 6, but carries no wheel, and this hand receives its motion from the center-wheel D, the teeth upon the wheel D and pinion c beingarranged to divide the minutes into seconds.

F is an intermediate wheel, such as is commonly used in stenrwinding and stem-setting watches. It is pivoted to the yoke G in the usual manner.

H is the stem.

I is a lever, such as is commonly used to connect the intermediate wheel, F, with the minute-wheel D, and to disconnect the same therefrom.

In Fig. 1 the arm I3 and spring d, which holds the arm B in engagement with the wheel E, and the second-hand are in a position suitable for an open-faced case, the pendant being in line with figures 1 2.

This cen In Fig. 2 the arm 13, the spring (Z, and the second-hand are in a position suitable for a hunting-case, the dial having been moved onequarter ofthe distance around, bringing Fig. 3 in line with the pendant, and the secondhand bcing at right angles with Fig. 3. It is common to make provision for this change of the position of the dial. 3y pivoting the arm B so that its position can be changed from that shown in Fig. 1 to that shown in Fig. 2, and by changing the position of the spring d from that shown in Fig. l to that shown in Fig. 2, it is very easy to use this improvement either in a Watch having a hunting-case or one having an open-face, because the staff which carries the second-hand is supported in the free end of the arm B and moves with it, and the pinion which carries the second-hand engages with the center-wheel D whether the arm be in the position shown in Fig. 1 or in that shown in Fi 2.

By means of the described devices when the hands are set either by the pendant of a stemwinding and stem-setting watch or by means of a key applied to the center-square on the staff which carries the minute-wheel, the second-hand will be always set to-correspond with the minute-hand whether the same be set to any given minute or to any fraction thereof.

"What I claim as new, and desire to secure by Letters Patent, is

1 In a watclrmovement, acenter-whecl, D,

secured to the minute-pinion, in combination with a bar, 13, a staff carrying the second-hand and pinion e and pivoted in the bar 13, whereby when the minute-hands and hour-hands areset in the usual manner the second-hand will be correspondingly set, substantially as set forth.

2. In a watch-movement, a center wheel, D, secured to the minute-pinion, in combination with a bar, B, pivoted at one end, a spring, (1, and a staff pivoted in the bar B and carrying the secondhand and the pinion 0, whereby the bar 13 and second-hand can be changed from the position for open-face movements to that of hunting-case movements, substantially as and for the purposes specified.

' ALBERT TROLLER.

Witnesses:

WILLIAM LATHROP, E. I. LATHROP. 

